Operating Segments and Related Information Sales and Revenue by Segment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Solar [Member]
Jun. 30, 2012
Solar [Member]
Jun. 30, 2013
Solar [Member]
Jun. 30, 2012
Solar [Member]
Jun. 30, 2013
Biomedical [Member]
Jun. 30, 2012
Biomedical [Member]
Jun. 30, 2013
Biomedical [Member]
Jun. 30, 2012
Biomedical [Member]
Mar. 09, 2012
Semiconductor Business Unit [Member]
Dec. 14, 2009
Medical Products Business Unit [Member]
Segment Reporting Information [Line Items]                            
Disposal Date                         Mar. 09, 2012 Dec. 14, 2009
Revenues $ 3,574 $ 6,620 $ 6,812 $ 14,095 $ 1,892 $ 4,881 $ 3,338 $ 10,734 $ 1,682 $ 1,739 $ 3,474 $ 3,361    
Operating Income (Loss) from continuing operations $ (1,768) $ (1,787) $ (4,370) $ (3,396) $ (1,938) $ (1,999) $ (4,730) $ (3,543) $ 170 $ 212 $ 360 $ 147